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1858 results about "Alloy composite" patented technology

A composite is, much like an alloy, a combination of at least two or more components. However, while an alloy always contains a metal in it, a composite does not have any metal included in its mixture.

Hybrid cemented carbide composites

Embodiments of the present invention include hybrid composite materials comprising a cemented carbide dispersed phase and a cemented carbide continuous phase. The contiguity ratio of the dispersed phase of embodiments may be less than or equal to 0.48. The hybrid composite material may have a hardness of the dispersed phase that is greater than the hardness of the continuous phase. For example, in certain embodiments of the hybrid composite material, the hardness of the dispersed phase is greater than or equal to 88 HRA and less than or equal to 95 HRA and the hardness of the continuous phase is greater than or equal to 78 and less than or equal to 91 HRA. Additional embodiments may include hybrid composite materials comprising a first cemented carbide dispersed phase wherein the volume fraction of the dispersed phase is less than 50 volume percent and a second cemented carbide continuous phase, wherein the contiguity ratio of the dispersed phase is less than or equal to 1.5 times the volume fraction of the dispersed phase in the composite material. The present invention also includes a method of making a hybrid cemented carbide composite by blending partially and / or fully sintered granules of the dispersed cemented carbide grade with “green” and / or unsintered granules of the continuous cemented carbide grade to provide a blend. The blend may then be consolidated to form a compact. Finally, the compact may be sintered to form a hybrid cemented carbide.
Owner:KENNAMETAL INC

Hybrid cemented carbide composites

Embodiments of the present invention include hybrid composite materials comprising a cemented carbide dispersed phase and a cemented carbide continuous phase. The contiguity ratio of the dispersed phase of embodiments may be less than or equal to 0.48. The hybrid composite material may have a hardness of the dispersed phase that is greater than the hardness of the continuous phase. For example, in certain embodiments of the hybrid composite material, the hardness of the dispersed phase is greater than or equal to 88 HRA and less than or equal to 95 HRA and the hardness of the continuous phase is greater than or equal to 78 and less than or equal to 91 HRA.Additional embodiments may include hybrid composite materials comprising a first cemented carbide dispersed phase wherein the volume fraction of the dispersed phase is less than 50 volume percent and a second cemented carbide continuous phase, wherein the contiguity ratio of the dispersed phase is less than or equal to 1.5 times the volume fraction of the dispersed phase in the composite material.The present invention also includes a method of making a hybrid cemented carbide composite by blending partially and / or fully sintered granules of the dispersed cemented carbide grade with “green” and / or unsintered granules of the continuous cemented carbide grade to provide a blend. The blend may then be consolidated to form a compact. Finally, the compact may be sintered to form a hybrid cemented carbide.
Owner:KENNAMETAL INC

Metal matrix composite

An extrudable and weldable matrix alloy composite comprising: a) a base material metal of about 50 to 99.9% by weight, b) boron carbide or silicon carbide of about 0.1 to 50% by weight, c) less than about 3.0% by weight of at least one metal having an intermetallic phase temperature lower than the melting point of the base material metal, and d) a reinforcement agent of up to about 5% by weight.
Owner:TN INT (FR)

High-entropy alloy-base composite material and preparation method thereof

The invention provides a high-entropy alloy based composite material and a method for preparation, which relates to an alloy composite material and a method for preparation. The invention provides the high-entropy alloy based composite material and a method for preparation, and a composite material whose comprehensive performance is better than high-entropy alloy. The high-entropy alloy based composite material is made from 1-45 percent of reinforced phase and 55-99 percent of high-entropy alloy base according to the volume percentage. The high-entropy alloy based composite material is prepared by an in-situ spontaneity method or a non- in-situ spontaneity method, and the reinforced phase is prepared in an original position in the high-entropy alloy base or is added from the outer portion. The invention further improves the mechanical properties of materials basing on original high-entropy alloy, and is capable of playing the potentiality of the high-entropy alloy base in maximum limit. The high-entropy alloy based composite material of the invention is capable of being used by various preparation processes, the operation is easy and is easy to operate.
Owner:HARBIN INST OF TECH

Material for bone tissue engineering scaffold and making method thereof

The present invention relates to biological material technology, and is especially porous magnesium, magnesium alloy and composite magnesium material used as high strength biomedicine rack material for human body hard tissue defection and its preparation process. The porous magnesium, magnesium alloy and composite magnesium material used in bone tissue engineering rack has porosity of 5-99 % and pore diameter of 50-900 microns. Owing to easy degradation and absorption of magnesium inside body, the bone tissue engineering rack of porous magnesium, magnesium alloy and composite magnesium material has excellent mechanical performance and excellent biocompatibility and can provide 3D space for cell to grow.
Owner:INST OF METAL RESEARCH - CHINESE ACAD OF SCI

Method for composite preparation of Ti alloy/TiAl alloy composite plate material by using laminated rolling-diffusion method

The invention discloses a making method of titanium alloy / TiAl composite board, which is characterized by the following: overlapping A (titanium foil) and C (aluminium foil); placing at least one layer B (titanium or titanium alloy foil, titanium or titanium alloy board) on the upper and lower surfaces of overlapped layer or among overlapping layer; setting adjacent layer C to B; adopting three layers or more of A or B as the most outer layer; jacketing; rolling under 20-750 deg.c and 750-1300 deg.c.
Owner:HARBIN INST OF TECH

Powder metallurgy preparation method of carbon nanotube reinforced aluminum alloy composite material

ActiveCN103789564ARapid precipitation strengtheningReliable and efficient processMicro nanoThermal deformation
The invention provides a powder metallurgy preparation method of a carbon nanotube reinforced aluminum alloy composite material. The method comprises the following steps: pre-preparing micro-nano flake powder of an alloying component, subsequently ball-milling the powder with a carbon nanotube and spherical pure aluminum powder to prepare flake composite powder, and further performing densifying, sintering, thermal deformation processing and thermal treatment to achieve alloying so as to finally obtain the carbon nanotube reinforced aluminum alloy composite material. Uniform compounding of the matrix aluminum powder, the carbon nanotube and the alloying component can be achieved through limited ball-milling, and meanwhile dangerous elements or uneasy grinding elements such as magnesium and silicon which are high in activity and likely to combust and explode are avoided by adopting the stable and easily ground pre-alloying aluminum powder, so that the security and the reliability are improved; in addition, because of large interlayer boundary and small layer thickness distance, the flake structure is beneficial for uniformly dispersing the alloying component and forming refined dispersed separated phase. The method is beneficial for bringing the effects of composite reinforcement of carbon nanotubes and alloy reinforcement into play to the maximum extent, is energy-saving and time-saving, and is safe and feasible.
Owner:SHANGHAI JIAO TONG UNIV

Method for preparing bimetallic nanometer alloy composite material by taking graphene as carrier

The invention discloses a method for preparing a bimetallic nanometer alloy composite material by taking graphene as a carrier. The method comprises the following steps of: by taking a precious metal N salt (N=Pd, Pt) and a transition metal M salt (M=Co, Ni and Cu) as precursors and taking graphene oxide as a matrix, reducing the components by employing a reducing agent; and finally, washing, filtering, drying, grinding and roasting to obtain the high-purity graphene bimetallic nanometer composite material. The composite material has high nanoparticle load capacity, stable structure, high uniformity and high dispersing property, has high binding force with the graphene and is high-efficiency in preparation method, low in cost, simple in process and suitable for industrial production. The composite material can be widely applied to the fields of magnetic targeting materials, various catalysts, electromagnetic shielding wave-absorbing materials, super-capacitor electrode materials and other related function materials.
Owner:安徽皖瑞能源科技有限公司

Road vehicle brake disc made of carborundum foamed ceramics/aluminum alloy composite materials and production method of road vehicle brake disc

The invention discloses a road vehicle brake disc made of carborundum foamed ceramics / aluminum alloy composite materials and a production method of the road vehicle brake disc. The body of the reinforced-aluminum-alloy brake disc with a carborundum foamed ceramics framework is made of reinforced aluminum alloy materials such as aluminum alloy or nano ceramics particles or carbon nano-tubes. The carborundum foamed ceramics framework is integrally casted on two symmetrical friction surfaces of the brake disc, and heat dissipation grooves or air holes can be casted or do not need to be casted on the friction surfaces. A plurality of heat dissipation ribs are casted in the peripheral direction of non-friction surfaces. Mounting holes are formed in the disc body. The production method includes the steps of production of the carborundum foamed ceramics framework, preprocessing of the framework, design and production of a casting mold of the brake disc, lower-pressure casting of the brake disc, heat treatment of the brake disc, precision processing of the brake disc and storage of a finished product. The brake disc is simple in production technology, light in weight, high and stable in friction factor, high in heat conductivity, long in service life and applicable to existing road vehicles.
Owner:SHIJIAZHUANG DONGDA HUITONG NEW MATERIAL CO LTD

Shape memory alloy composite material shock and vibration isolator devices

InactiveUS20090126288A1Large elastic strain capabilityLow and high cycle fatiguePortable framesNon-rotating vibration suppressionElastomerShape-memory alloy
A shock and vibration isolator device has one or more connecting elements of a superelastic shape memory alloy composite material extending between a base member, configured to mount to a structure or ground, and a mounting member, configured to support equipment or machinery. The superelastic shape memory alloy composite material is formed of a plurality of superelastic wires embedded in an elastomeric matrix material.
Owner:KAZAK COMPOSITES

Aluminum alloy composite and method for joining thereof

The object of the present invention is to strongly join an aluminum alloy part with an FRP prepreg. An object obtained by subjecting an aluminum alloy to a suitable liquid treatment so as to form a surface having large, micron-order irregularities and also fine irregularities with a period of several tens of nanometers, eliminating the presence of sodium ions from the surface and additionally forming a surface film of aluminum oxide, which is thicker than a natural oxide layer, has been found to have a powerful adhesive strength with epoxy-based adhesives. By simultaneously curing an FRP prepreg which uses the same epoxy-based adhesive in the matrix, an integral composite or structure in which FRP and aluminum alloy have been united at a joining strength of unprecedented magnitude is produced.
Owner:TAISEI PLAS CO LTD

Preparation method of graphene/aluminum alloy composite material

The invention provides a preparation method of a graphene / aluminum alloy composite material. The addition quantity of graphene in the composite material accounts for 0.1wt.%-5.0wt.% of the total quantity of the composite material. Compared with tensile strength and electrical performance of an aluminum alloy without graphene, the mechanical properties and the electrical performance of the graphene / aluminum alloy composite material are improved to varied degrees. With the appearance of an intermediate alloy of the graphene / aluminum alloy composite material, the graphene can be added to molten aluminum in a form of a graphene / aluminum alloy intermediate alloy, and the dispersion uniformity of the graphene in the molten aluminum is improved to the greatest degree, so that industrial batch production of graphene modified aluminum conductor cables can be realized with a melt-casting method. The preparation method of the composite material comprises steps as follows: mechanical mixing, low-temperature ball milling, vacuum degassing, hot isostatic pressing and extrusion and the like, adopts simple and controllable technology, has lower production cost, is applicable to industrial production and has good market prospect.
Owner:AVIC BEIJING INST OF AERONAUTICAL MATERIALS

Preparation method of nitrogen-doped carbon nanotube wrapped metal iron-cobalt alloy composite material

Belonging to the technical field of material preparation, the invention relates to a preparation method of a nitrogen-doped carbon nanotube wrapped metal iron-cobalt alloy composite material (FeCo-NCNTs). The technical scheme includes: firstly, dissolving a metal salt and a carbon-nitrogen source in water, ethanol or ethylene glycol, mixing the substances evenly, and then performing drying and grinding to obtain a precursor; then putting the precursor in a tubular furnace, in a nitrogen atmosphere, conducting programmed heating to a roasting temperature, and conducting high temperature roasting and grinding to obtain a black powder sample; and then subjecting the black sample to pickling treatment until the pH value of the solution is neutral, and conducting pumping filtration and naturaldrying, thus obtaining the nitrogen-doped carbon nanotube wrapped metal iron-cobalt alloy composite material (FeCo-NCNTs). The obtained composite material can be used as a good electrocatalytic hydrogen evolution catalyst. The composite material prepared by the method provided by the invention has the characteristics of easily available raw materials and low cost, and has important significance inelectrochemical application.
Owner:JIANGSU UNIV

Carbon nano tube wave absorbtion mateirla of surface carried with magnetic alloy particle and preparation method thereof

A carbon nanotube carrying magnetic alloy particles on its surface and used as wave absorbing material is prepared through uniformly dispersing carbon nanotubes in the solution of the sulfate of Fe, Co and Ni, and oxidizing-reducing reaction for deposition the magnetic alloy particles on carbon nanotubes.
Owner:TSINGHUA UNIV

Method for preparing aluminum-based graphene composite material

ActiveCN104862508AEvenly dispersedDiffuse strongAlloy compositeIngot
The invention discloses a method for preparing an aluminum-based graphene composite material. According to the method, firstly, a grapheme and aluminum alloy composite material precast ingot is prepared; then the precast ingot is added into aluminum alloy melt for re-melting, and an aluminum-based graphene composite material cast ingot is obtained through the casting technique; finally, the cast ingot is homogenized, and high-strength aluminum-based graphene composite material bars or plates are obtained through forming techniques such as hot extrusion or rolling. The method well solves the problems about compounding and homogenization of grapheme and aluminum alloy, and the doping amount of the grapheme in the composite material can be precisely adjusted; the preparation method is provided on the basis of semi-continuous casting and is simple and efficient, and large-scale industrialization is easy to achieve.
Owner:北京石墨烯技术研究院有限公司

Nanometer metal or alloy composite material and preparation and usage thereof

The invention relates to a compound material of millimicron metal or alloy / electrode active substance, comprising: millimicron metal or alloy and electrode active substance; millimicron metal or particle of alloy takes up 0.02~30 wt% of electrode active substance. The compound material is negative electrode active material of secondary lithium battery, cooperating with of metal oxide containing lithium, organic electrolyte solution, diaphragm, battery shell, and afflux agent and lead, to form secondary lithium battery. The electrode active substance of compound material supplies rigid skeleton structure and center for inlaying lithium, helps the formation of solid electrolyte layer on the surface of electrode active substance which has excellent ion conducting power; can avoid destruction to lamellar structure of graphite, stop unit of millimicron material effectively and increase periodicity and capacity of discharge and discharge with large current. The a secondary lithium battery has excellent abilities of circulation and safety, suitable for the place needing fairly high energy density.
Owner:INST OF PHYSICS - CHINESE ACAD OF SCI

High hardness magnesium alloy composite material

A magnesium alloy composite material includes a magnesium alloy matrix, and a nanoparticle second phase material dispersed in the magnesium alloy matrix. The nanoparticle second phase material has an average particle size ranging from 1.0 nm to 100 nm. Preferably, the amount of the nanoparticle second phase material ranges from 0.05 wt % to 2.5 wt % based on total weight of the magnesium alloy composite material. With the addition of the nanoparticle second phase material to the magnesium alloy matrix, hardness can be increased to a relatively high level without significantly increasing density.
Owner:SUN MOON STAR BIOCHEM & LIGHT MATERIALS

Method and device for preparing working layer of metallurgical hot roll by laser direct deposition

The invention discloses a method and a device for preparing a working layer of a metallurgical hot roll by laser direct deposition, which belong to the field of the application of laser technology. The method is characterized in that high speed steel-like powder and Co-based alloy composite powder are used as the materials for the working layer of the roll. Concretely, the method comprises: filling high speed steel-like powder or mechanically mixed powder which uses Co-based alloy and the like as a substrate material and is added with reinforcing and toughening submicron grains with different amounts into a powder supply system; and performing laser-assisted direct metal deposition on the surface of a roll core, of which the travel is controlled by a worktable, with synchronous powder supply to manufacture the working layer of the roll. A deposition method adopts an alternate deposition mode. The corresponding deposition thickness is determined according to the requirements on the thickness of the working layer. The hard phase content of the powder, in which the Co-based alloy is added as a hard phase, is increased layer by layer so as to form a gradient deposited layer. In the method, the reinforced, toughened and wear-resistance working layer is prepared on the surface of a cheap hot roll core part material by laser-assisted metal direct deposition technology under specific process conditions.
Owner:JIANGSU UNIV

Sacrificial corrosion-protective aluminum alloy for heat exchangers, high corrosion-resistant aluminum alloy composite material for heat exchangers, and heat exchanger using the said composite material

There is disclosed a sacrificial corrosion-protective aluminum alloy for heat exchangers which contains Zn more than 4.0 wt % but 15.0 wt % or less, 0.1 to 3.0 wt % of Fe, and 0.2 to 3.0 wt % of Ni, with the balance being made of aluminum and unavoidable impurities. There is also disclosed an aluminum alloy composite material in which the said aluminum alloy is used as the sacrificial material and a heat exchanger using the aluminum alloy composite material. According to the aluminum alloy composite material, it is possible to prevent erosion of heat-exchanger tubes when refrigerant in tube is strongly alkaline and is flowing at a high flow rate.
Owner:CALSONIC KANSEI CORP

Non-magnetic cube texture Cu-based alloy composite base band and preparation method thereof

The invention discloses a non-magnetic cube texture Cu-based alloy composite base band. The non-magnetic cube texture Cu-based alloy composite base band is prepared by compositing surface layers and a core layer and has the structure of surface layer, core layer and surface layer, wherein each surface layer is copper-nickel alloy in which the weight percentage of nickel is less than 50 percent; and the core layer is nickel-tungsten alloy in which the atomic percentage of tungsten is between 9 and 12 percent. A preparation method by using powder metallurgy comprises the following steps: (1) initial powder mixing and mold filling; (2) compressing and sintering of a composite green compact; (3) deforming and rolling of the sintered composite bullet; and (4) recrystallizing heat treatment for a cold rolling base band. The preparation method improves the mechanical strength of the whole base band and simultaneously ensures the non-magnetic performance of the whole base band; and the composite base band has high yield strength.
Owner:BEIJING UNIV OF TECH

Nano ceramic particle reinforced nickel-based superalloy composite material and laser 3D printing forming method thereof

The invention discloses a nano ceramic particle reinforced nickel-based superalloy composite material and a laser 3D printing forming method thereof. A nickel-based superalloy with the particle size of 15-45mu m is taken as a matrix, CrC with the particle size of 40-100nm is taken as a reinforced phase, and the addition amount of CrC is 2.0-8.0% by weight of the composite material matrix; a nano CrC particle hybrid reinforced nickel-based superalloy composite material part has the advantages of good high-temperature anti-corrosion property, abrasion resistance, high temperature creep and the like and can meet special performance requirements of an aero-engine hot end component at high temperature; a high-energy laser forming method is applicable to preparation of a difficult-to-process material and forming of a complex part; and a forming die is not needed, so that a manufacturing cycle is shortened, and the cost is reduced.
Owner:JIANGSU SILAIMU INTELLIGENT TECH CO LTD

Method for preparing nucleocapsid structure lithium ion battery alloy composite cathode material

The invention relates to a method for preparing a nuclear shell structured alloy composite anode material of lithium ion battery through a sponging drying-carbon thermal reduction method, and belongs to the materials science technique field. The method comprises the following procedures: weighing nanometer oxide and an organic macromolecule polymer used for preparing the alloy composite material according to stoichiometric proportion; adding solvent to prepare a solution with certain concentration; carrying out a spray drying process on the solution; and calcining the obtained power at certain temperature, thus obtaining a spherical nuclear shell structured alloy composite anode material of lithium ion battery. The method for preparing a nuclear shell structured alloy composite anode material of lithium ion battery has the advantages of preparing the products with good electrochemical property, low preparation cost and simple technology, and can be directly used in the mass industrial production of the alloy composite anode material of lithium ion battery.
Owner:TSINGHUA UNIV

Method for producing an aluminum alloy composite material for a heat exchanger, and aluminum alloy composite material

A method for producing an aluminum alloy composite material for a heat exchanger, which contains the steps of: homogenizing an aluminum alloy core alloy by keeping at 530° C. or more for 15 hours or more; fitting an Al—Si-series filler alloy on one side or on both sides of the core alloy; hot rolling; cold rolling; intermediate annealing, to completely recrystallize the core alloy; and giving a strain of 1 to 10%, wherein the aluminum alloy core alloy contains 0.01 to 1.0% by mass of Si, 0.1 to 2.0% by mass of Fe, 0.1 to 2.0% by mass of Cu, 0.5 to 2.0% by mass of Mn, and less than 0.2% by mass (including 0% by mass) of Ti, with the balance being Al and inevitable impurities; and an aluminum alloy composite material produced by the method.
Owner:FURUKAWA SKY ALUMINUM CORP

Aluminum alloy composite for brazing and heat exchanger including the same

An Al—Si based brazing material is formed on one surface of a core material, and a cladding material is formed on the other surface of the core material with a cladding ratio of 6 to 30% with respect to an entire thickness thereof. The core material contains 0.2 mass % or less of Mg, 0.3 mass % or less of Cr, 0.2 mass % or less of Fe, 0.2 to 1.0 mass % of Cu, 0.05 to 1.3 mass % of Si, 0.3 to 1.8 mass % of Mn, and 0.02 to 0.3 mass % of Ti in such a manner that a total content of Cu and Si is in the range of 2.0 mass % or less. The cladding material contains 2 to 9 mass % of Zn, 0.3 to 1.8 mass % of Mn and / or 0.04 to 1.2 mass % of Si, and further contains 0.02 to 0.25 mass % of Fe, 0.01 to 0.30 mass % of Cr, 0.005 to 0.15 mass % of Mg, and / or 0.001 to 0.15 mass % of Cu.
Owner:KOBE STEEL LTD

Manufacturing method of detachable ceramic alloy composite grinding roller

The invention discloses a manufacturing method of a detachable ceramic alloy composite grinding roller. The manufacturing method comprises the following steps: firstly, uniformly mixing ceramic particles and low-melting-point alloy powder by binders so as to obtain a mixture; stuffing the mixture in a mold cavity, and forming the mixture into a biscuit; putting the biscuit together with a mold into a drying cabinet, and drying and sintering the biscuit to obtain a ceramic precast part; and taking out the sintered ceramic precast part, fixing the taken ceramic precast part on the surface of a roller skin liner casting mold cavity, casting abrasion-proof alloying metal liquid to obtain a roller skin liner of which the surface presents metallurgical bond by the ceramic precast part and an abrasion-proof alloy material, and finally fixing the roller skin liner on the surface of a roller core. According to the manufacturing method of the detachable ceramic alloy composite grinding roller disclosed by the invention, the roller skin liner is small in size and light in weight, the casting quality and the heat treatment technology are easy to control, and the qualified rate of finished products is high; the surface of the roller skin liner is composited by the high abrasion-proof ceramic precast part and an abrasion-proof alloy, so that the surface of the roller skin liner has double abrasion-proof properties and the toughness of the metal materials; the end surface of the roller skin liner is fixed by bolts, so that the roller skin liner can be detached on the site, and a new roller skin liner is replaced.
Owner:NANTONG GAOXIN ANTIWEAR MATERIALS TECH CO LTD

Plating product and method for producing the same

The invention relates to an electric plating product, which comprises parent material and copper-tin alloy composite coatings on the surface of the parent material, therein, the copper-tin alloy composite coatings adopts multilayer, the copper content of at least one layer of the copper-tin alloy composite coatings is different from the copper content of the other copper-tin alloy composite coatings. The invention also provides the preparation method of the electric plating product. The electric plating product comprises the multilayer copper-tin alloy composite coatings, at least one layer of the copper-tin alloy composite coatings is different from the copper content of the other copper-tin alloy composite coatings, thereby, the electric plating product simultaneously has higher vibration abrasion resistance and corrosion resistance, and the good combination property is realized.
Owner:BYD CO LTD

Metal extruding, casting and forging forming method and products of method

The invention discloses a metal extruding, casting and forging forming method and products of the method, and particularly relates to the extruding, casting and forging forming method of light alloy or light alloy composite materials in the same die, and the products of the method. The extrusion casting technology and the continuous casting and continuous forging technology are improved, and the method mainly solves the problem that the plastic deformation of the continuous-casting and continuous-forging critical deformation. According to the technical scheme, an unfilled cavity is reserved at the casting stage, the volume of the cavity needs to be larger than the size corresponding to the workpiece forging critical deformation, and then at the forging stage, through plunger extrusion, the cavity is fully filled in the plastic deformation process or grain refinement filling process. The method is a novel metal hot working forming method, casting, forging and semi-solid state processing are integrated, and the method is suitable for manufacturing high-performance force bearing parts and airtight parts like aluminum wheels and connecting rods.
Owner:支前明

Aluminum alloy composite for brazing and heat exchanger including the same

An Al—Si based brazing material is formed on one surface of a core material, and a cladding material is formed on the other surface of the core material with a cladding ratio of 6 to 30% with respect to an entire thickness thereof. The core material contains 0.2 mass % or less of Mg, 0.3 mass % or less of Cr, 0.2 mass % or less of Fe, 0.2 to 1.0 mass % of Cu, 0.05 to 1.3 mass % of Si, 0.3 to 1.8 mass % of Mn, and 0.02 to 0.3 mass % of Ti in such a manner that a total content of Cu and Si is in the range of 2.0 mass % or less. The cladding material contains 2 to 9 mass % of Zn, 0.3 to 1.8 mass % of Mn and / or 0.04 to 1.2 mass % of Si, and further contains 0.02 to 0.25 mass % of Fe, 0.01 to 0.30 mass % of Cr, 0.005 to 0.15 mass % of Mg, and / or 0.001 to 0.15 mass % of Cu.
Owner:KOBE STEEL LTD

Method for manufacturing dissimilar aluminum alloy composite automobile hub

The invention discloses a method for manufacturing a dissimilar aluminum alloy composite automobile hub. The method comprises the following steps of: manufacturing a rim; manufacturing a spoke of which the outer diameter is slightly greater than the inner diameter of the rim; heating the rim, and pressing the spoke into a mold provided with a positioning device to be in clearance assembly with the rim; and performing friction stir spot welding by dividing the rim and the spoke subject to clearance assembly into a plurality of points according to peripheries. The spoke and the rim are assembled in a clearance fit manner, so the spoke and the rim are firmly bonded without being welded; and the spoke and the rim are connected through stir friction spot welding, the method has less thermal influence on the texture and the performance of the hub than friction stir welding and girth welding, and a welded junction of the dissimilar aluminum alloy composite automobile hub obtained through the method is not needed to be subjected to thermal treatment; therefore, a production technology is simplified, the overall performance of the hub is greatly improved, and the aim of losing the weight of the hub is fulfilled.
Owner:GUANGZHOU RES INST OF NON FERROUS METALS

Design of ferromagnetic shape memory alloy composites and actuators incorporating such materials

The present invention employs an optimized cross-sectional shape for a ferromagnetic shape memory alloy (FSMA) composite that is used in a spring-type actuator, an improved hybrid magnetic trigger for use in FSMA based actuators, an a FSMA composite based spring type actuator, an a FSMA based spring type actuator including a stack of triggering units and FSMA springs, a FSMA composite based torque actuator. The invention also includes a model that can be employed to evaluate different materials being considered as components a FSMA for a FSMA composite used in either a FSMA based torque actuator or a FSMA spring actuator.
Owner:UNIV OF WASHINGTON
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